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Questions tagged [nsmanagedobjectmodel]

An NSManagedObjectModel object describes collection of entities that you use in your application. It is available in OS X v10.4 and later and available in iOS 3.0 and later .

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"NSInternalInconsistencyException" Entities for a configuration must already be in the model

I am trying to add a new entity in NSManagedObjectModel in my NSIncrementalStore Subclass. I am doing this in loadMetadata method but it keeps throwing this exception on the last line. See Code Below "NSInternalInconsistencyException" Entities for a…
Nofel Mahmood
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A way to persist a duplicate version of the core data model temporarily

This is a bit of a tough question to explain. I've been looking for an answer to this over two weeks but I couldn't find a solution for this use case. Before I get into the nitty gritty details, please have a look at this image. The user is…
Isuru
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Runtime-generated Custom NSManagedObjectModel for NSPersistentDocument

I have a document-based (OS X) app that uses Core Data, so the document is a subclass of NSPersistentDocument. When the user creates a document, s/he specifies a setting that determines the number of attributes a particular entity in the managed…
user2105505
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What is the relationship between NSManagedObject subclasses and the xcdatamodeld file?

I started creating entities in the xcdatamodeld (xcdatamodel) file. I subclassed entities using the Create NSManagedObject Subclass… menu entry. I added custom code to these subclasses. If i want to make changes (like add/remove an attribute, a…
MartinW
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How does the save method in Core Data works?

I'm following a guid in core data, and they implement an action method to preform saving to the database using a ManagedObject. I understand all the code in the method except the method which they say preform the saving, and to me it looks like the…
JohnBigs
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Why does my NSManagedDataModel have no entities after I add another version of the DataModel?

Why does my NSManagedDataModel have no entities after I add another version of the DataModel? MacBook Pro Late 2008, OS X 10.8.5, Xcode 5.0.2, Project has two apps, one OS X, one iOS, both share a datamodel Recently add a new dataModel…
mbarron
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Programmatically Setting Up Core Data - Where Does NSManagedObjectContext Come From?

I want to set up Core Data entirely programmatically. I've defined a database schema in the form of an NSManagedObjectModel and added some entity definitions in the form of NSEntityDescription's as is done at the bottom of this page. All is well…
pachun
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Core data save model not working iOS

I have created a core data model and when trying to save records I get the following console message: Unresolved error Error Domain=NSCocoaErrorDomain Code=134100 "The operation couldn’t be completed. (Cocoa error 134100.)" UserInfo=0x8b3bc50…
Vaugen Wakeling
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Right Usage of NSManagedObjects in Core Data

I'm currently diving further into Core Data and have some minor confusion about using Core Data NSManagedObject Models. For example, I would have a "Contact" Entity that has properties such as firstname, lastname, address, etc... What I'm trying to…
Shai Mishali
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Core Data Model Subclassing (Not NSManagedObject subclassing)

I would like to know if anyone knows if it is possible to subclass a Core Data Model. In my case I am developing a library that I would like to use in 2 projects. Both projects have nearly the same Data Objects that i would like to outsource into…
JulianM
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How to identify Core Data Managed Object Model -- hash?

Is there a method to get a unique hash for a Core Data Managed Object Model, so that I can see if the core data store is up-to-date with a specific model? I am building a core data sync system, and I want to make sure that the core data stores which…
Jason
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